Metal Microstructures With Adhesion Polymer Inserted And Its Performance

Metal materials are a new kind of materials in the nano materials science.Because of its special physical and chemical properties,especially the surface plasmon resonance(SPR),it becomes a hot research topic recently.But metal micro structure has many disadvantages that are not conducive to the practical application of it,the main one is that the adhesion force with the substrate is not strong,and in practical applications it would easily fall off from the substrate surface,and it limits its applications and developments.Based on this,we study the effect of localized surface plasmon resonance,mechanical stability and biological sensing applications from the increase of adhesion between the metal micro structure and the target substrate.In this paper,a method for improving the mechanical properties of metallic micro structures is developed.The method makes the metal micro structure firmly fixed on the base by inserting an adhesion polymer intercalation layer.To insert the polymer layer,we take on a"peeling-assembling-transferring" process:firstly,the micro structure is separated from the original substrate,and then the polymer layer is assembled between the micro structure and the substrate interface through the layer by layer transfer technology,and finally the microstructure is transferred to the target substrate.Inserting the polymer layer on the metal microstructure can not make any apparent damage of morphology or deterioration of function,and can enhance the adhesion between the metal micro structure and the base,and then to achieve the objective of transferring and fixing the metal micro structure.In addition,this transfer method can be applied to a large number of micro structures,such as the separate arrays,continuous films,nanowire networks.The "peeling-assembling-transferring" process is simple and easy to operate,and the fixed effect after transferring is obvious,and it paves the way to effectively improve the metal micro structure mechanical stability and achieve the actual application.